Sussy comes from sus, the Among Us slang for suspicious that spread widely online in 2020, and it became a general joke label for anything acting shady. Beatboxing clips were already a staple of short form video because they are catchy, handmade and easy to loop. This sound merges both trends, turning a vocal rhythm into a meme shorthand for playful suspicion. It circulates in edits, gaming videos and reaction posts where creators need an instant, recognisable cue that something silly and slightly suspect is happening on screen.